PIC32MX420F032H-40V/PT - 32-bit 40MHz MCU 32KB Flash USB OTG | Microchip
N.º da peça: PIC32MX420F032H-40V/PT ✓ Ativo| Qtd. | Preço unitário | Total |
|---|---|---|
| 1 | $5.92 | $5,92 |
| 10 | $5.32 | $53,20 |
| 100 | $4.78 | $478,00 |
| 250 | $4.42 | $1.105,00 |
| 1.000 | $3.95 | $3.950,00 |
PIC32MX420F032H-40V/PT Visão geral
A 32-bit microcontroller (MCU) is a microprocessor core that processes data and instructions in 32-bit wide paths, providing higher throughput and richer instruction sets than 8-bit or 16-bit devices. Within the broader semiconductor hierarchy, an MCU sits inside the microcontroller category -> embedded processor -> IC -> semiconductor. The PIC32MX family specifically uses the MIPS32 M4K core with a 5-stage Harvard pipeline, hardware multiply/divide, and MIPS16e code compression to balance deterministic real-time behavior with higher code density.
Key features of this part include a 5-stage pipeline, single-cycle 32x32 hardware multiply, a USB OTG full-speed peripheral with on-chip PHY, an 8-channel 10-bit 1 Msps ADC, four 16-bit timers, two I2C, two SPI, two UART, five PWM outputs, and 51 general-purpose I/O pins. The integrated DMA controller offloads data movement between peripherals and memory, freeing the CPU for application logic. A programmable prefetch module reduces Flash access stalls, accelerating execution from on-chip Flash.
Typical applications include USB peripherals (HID, CDC, mass storage, audio), industrial control nodes with USB diagnostics, embedded web servers and tethered sensors, motor control front-ends with USB service-port access, and educational or maker-class platforms that benefit from Microchip's MPLAB X IDE and Harmony framework ecosystem. The wide operating temperature range and 3.3V single-supply operation simplify analog and digital interface design in mixed-signal boards.
When designing, confirm VDD decoupling with 100 nF and bulk capacitors near the package, route the USB DP/DM lines as a 90 ohm differential pair with proper length matching, and respect the trace-length guidance from Microchip's USB design notes. The PT package denotes a lead-free TQFP suitable for standard SMT assembly lines. This page combines pricing, drop-in alternatives, and engineering design guidance not consolidated in the manufacturer datasheet alone.
Alternativas drop-in para PIC32MX420F032H-40V/PT — mesmo encapsulamento, compatível pino a pino. Peças de encapsulamento diferente que exigem retrabalho na PCB são excluídas.
Variantes desta série
Modelos da mesma série compatíveis como drop-in com PIC32MX420F032H-40V/PT (mesmo formato e footprint) — diferindo em DMA Channels, Package, ADC, Operating Temperature, Program Memory (Flash).
Ferramenta de comparação rápida — selecione peças alternativas para comparação lado a lado:
PIC32MX420F032H-40I/PT
✅ Drop-In✓ Em estoque
$3.61 / unidade
Ver ficha técnica →PIC32MX320F064H-40V/PT
✅ Drop-In✓ Em estoque
$3.78 / unidade
Ver ficha técnica →PIC32MX320F064HT-40V/PT
✅ Drop-In✓ Em estoque
$2.85 / unidade
Ver ficha técnica →PIC32MX340F128H-80V/PT
✅ Drop-In📋 Alternativa de referência (fora do catálogo)
PIC32MX340F256H-80V/PT
✅ Drop-In✓ Em estoque
$4.4 / unidade
Ver ficha técnica →PIC32MX270F256H
✅ Drop-In📋 Alternativa de referência (fora do catálogo)
PIC32MX420F032H-40V/PT Classificações máximas e características elétricas
| Core Architecture | MIPS32 M4K |
| Core Count | Single-core |
| Maximum CPU Speed | 40 MHz |
| Performance | 66 DMIPS |
| Program Memory (Flash) | 32 KB (32K x 8) |
| RAM | 8 KB SRAM |
| Supply Voltage Range | 2.3 V to 3.6 V |
| Typical Operating Voltage | 2.5 V / 3.3 V |
| Encapsulamento | 64-pin TQFP (PT) 10x10 mm |
| Tipo de montagem | Surface Mount |
| USB Peripheral | USB 2.0 On-The-Go with integrated PHY |
| ADC | 10-bit, 1 Msps, 16 channels |
| Timers | Five 16-bit timers |
| PWM Outputs | 5 channels |
| Communication Interfaces | 2x UART, 2x SPI, 2x I2C |
| GPIO | 51 I/O pins |
| DMA Channels | Dedicated DMA for USB OTG plus general DMA |
| Pipeline Stages | 5-stage Harvard pipeline |
| Code Compression | MIPS16e mode for up to 40% smaller code size |
| Faixa de temperatura de operação | -40C to +105C (V grade) |
| Lead-Free / RoHS | Lead-free finish; RoHS status to be confirmed at order |
| Packaging Type | Tray |
Guia de Configuração de Pinos do PIC32MX420F032H-40V/PT 64-pin tqfp (pt) 10x10 mm
Configuração de pinos para PIC32MX420F032H-40V/PT (pacote 64-pin tqfp (pt) 10x10 mm). Este CI digital inclui GPIO, interfaces de comunicação (UART, SPI, I2C) e pinos de alimentação. Consulte o datasheet do fabricante para funções alternativas dos pinos e opções de configuração. Essencial para projeto de sistemas embarcados e layout de PCB.
Nenhum dado detalhado de pinagem disponível para PIC32MX420F032H-40V/PT.
Consulte a ficha técnica para a configuração completa dos pinos.
Aplicações típicas
PIC32MX420F032H-40V/PT é adequado para 7 aplicaçãos: USB HID Peripherals, USB CDC Virtual COM Port Bridges, USB Mass Storage and Card Readers, Industrial Control with USB Diagnostics, USB Audio Class (Headset/VoIP) Devices, Embedded Web Servers and Tethered Sensors, Educational and Maker-Class Platforms.
USB HID Peripherals
The PIC32MX420F032H-40V/PT is a strong fit for USB HID peripherals (keyboards, mice, game controllers, custom input devices) because its on-chip USB 2.0 On-The-Go with integrated PHY and dedicated DMA channel eliminates the need for an external transceiver while sustaining 12 Mbps full-speed signaling. With 32 KB of Flash and 8 KB of SRAM, it can run Microchip's MLA USB HID stack with comfortable descriptor, report, and buffer headroom for compound HID usages such as multi-touch digitizers or keyboard-plus-consumer-control combos. At 40 MHz / 66 DMIPS the M4K core easily handles HID polling at the standard 1 ms interval plus application-layer debouncing, LED driving, and power management. The -40C to +105C V-temp grade allows deployment in industrial enclosures.
Recomendado
USB CDC Virtual COM Port Bridges
For USB-to-UART bridge dongles, industrial service-port adapters, and tethered debug gateways, the PIC32MX420F032H-40V/PT fits well thanks to its integrated USB device PHY, two hardware UART channels, and 8 KB of SRAM for CDC line-coding and buffer management. The PIC32MX420 at 40 MHz can sustain typical 115200 bps CDC throughput with CPU idle time left over for protocol translation (e.g., RS-232 to Modbus or to CAN). The on-chip DMA offloads bulk transfer housekeeping, freeing the M4K to handle application logic. Compared to external-FTDI bridge solutions, this single-chip approach reduces BOM and PCB area, while keeping the part fully supported by MPLAB X and XC32 toolchains.
Recomendado
USB Mass Storage and Card Readers
USB mass-storage and SD-card reader applications map naturally to the PIC32MX420F032H-40V/PT because of its USB device peripheral plus dedicated DMA channel, which handles sector-by-sector transfers without CPU intervention. With 32 KB of Flash and 8 KB of SRAM, the part can host a FAT16/32 file system plus SCSI bulk-only transport, while leaving code space for read/write LED indication and power-on diagnostics. The PIC32MX422's 5-stage MIPS pipeline plus 16-channel 10-bit ADC is convenient for monitoring SD-card insertion and VBUS presence without extra external components. The 64-pin TQFP package also exposes enough GPIO for multiple card slots and status LEDs.
Recomendado
Industrial Control with USB Diagnostics
Industrial control boards that require USB diagnostics for in-field firmware updates or service-log retrieval benefit from the PIC32MX420F032H-40V/PT's USB OTG capability (host or device) and 51 GPIO pins for sensors, actuators, and external communication. At 40 MHz the MCU drives 5 PWM outputs and 16 ADC channels with deterministic real-time response, suitable for closed-loop regulation of fans, valves, or heater elements. The V-temp grade (-40C to +105C) supports unconditioned industrial cabinets. Pair the MCU with a small LCD and a USB service-port firmware updater to streamline field maintenance without opening the enclosure.
Recomendado
USB Audio Class (Headset/VoIP) Devices
The PIC32MX420F032H-40V/PT suits USB Audio Class 1.0 devices such as USB headsets, VoIP dongles, or USB-to-I2S bridges because the integrated USB device PHY plus 8 KB of SRAM can hold ping-pong audio buffers plus descriptor state. The on-chip 10-bit ADC and I2S-capable serial interfaces allow direct connection to a codec; alternatively, an external 16-bit codec can be attached via SPI. The PIC32MX422's 40 MHz CPU keeps up with full-speed 16 kHz mono audio while maintaining low-latency USB polling. The -40C to +105C range supports consumer and prosumer audio products without thermal redesign.
Recomendado
Embedded Web Servers and Tethered Sensors
For compact embedded web servers, USB-tethered sensor hubs, or Ethernet-via-USB data loggers, the PIC32MX420F032H-40V/PT provides enough MIPS and Flash to run a TCP/IP stack such as Microchip's MLA TCP/IP with USB RNDIS class. The 51 GPIO pins can read multiple analog channels through the 10-bit ADC while the USB OTG maintains high-bandwidth host. With 32 KB of Flash the part is suited for simple HTTP servers, MQTT publish, or vendor-specific diagnostic interfaces over USB CDC/ECM. The V-temp grade lets the module sit in industrial enclosures next to heat sources.
Recomendado
Educational and Maker-Class Platforms
The PIC32MX420F032H-40V/PT is well-suited to teaching platforms, microcontroller coursework, and maker-class development boards because of its USB device/host/OTG flexibility and strong MPLAB X IDE ecosystem with free XC32 compiler. Students can experiment with USB stacks, ADC sampling, PWM motor control, and I2C/SPI peripherals using a single chip and a micro-B USB cable. The 64-pin TQFP (PT) is breadboard-compatible with breakout boards (e.g., PA0096). Compared to smaller PIC16 or PIC24 parts, the 40 MIPS MIPS M4K core plus 32 KB Flash gives students headroom for ambitious projects without immediate memory pressure.
Recomendado
Resumo dos produtos recomendados
Dados de referência de engenharia para PIC32MX420F032H-40V/PT — comparação, orientação de projeto e informações de conformidade.
Guia de seleção
Comparação com alternativas
| Parâmetro | Este produto | PIC32MX420F032H-40I/PT | PIC32MX320F064H-40V/PT | PIC32MX320F064HT-40V/PT | PIC32MX340F128H-80V/PT | PIC32MX340F256H-80V/PT | PIC32MX270F256H |
|---|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 64-pin TQFP (PT) 10x10 mm | 64-pin TQFP (PT) - same | 64-pin TQFP (PT) - same | 64-pin TQFP (PT) - same | 64-pin TQFP (PT) - same | 64-pin TQFP (PT) - same | 64-pin TQFP (PT) - same |
| Core | MIPS32 M4K 32-bit | MIPS32 M4K | MIPS32 M4K | MIPS32 M4K | MIPS32 M4K | MIPS32 M4K | MIPS32 M4K |
| Max Frequency | 40 MHz | 40 MHz | 40 MHz | 40 MHz | 80 MHz | 80 MHz | 50 MHz |
| Flash | 32 KB | 32 KB | 64 KB | 64 KB | 128 KB | 256 KB | 256 KB |
| RAM | 8 KB | 8 KB | 16 KB | 16 KB | 32 KB | 32 KB | 64 KB |
| USB Peripheral | USB 2.0 OTG + PHY | USB 2.0 OTG + PHY | USB 2.0 Device only | USB 2.0 Device only | USB 2.0 Device only | USB 2.0 Device only | USB 2.0 Device only |
| Operating Temperature | -40C to +105C (V) | -40C to +85C (I) | -40C to +105C (V) | -40C to +105C (V) | -40C to +105C (V) | -40C to +105C (V) | -40C to +105C (V) |
Principais diferenciais
- On-chip USB 2.0 OTG with integrated PHY and dedicated DMA (vs PIC32MX320F064H-40V/PT)
- Wider operating temperature range (-40C to +105C) (vs PIC32MX420F032H-40I/PT)
- Mature family with stable tools (vs Newer PIC32MX270F256H)
Notas de projeto
Place a 100 nF decoupling capacitor as close as possible to every VDD pin on the PIC32MX420F032H-40V/PT, plus a single 4.7 uF or 10 uF bulk capacitor on the main 3.3 V supply rail. For designs that use the USB OTG peripheral, add a 10 uF bulk on VBUS and follow Microchip's USB hardware design notes for the 90 ohm differential DP/DM pair layout. The PT package's exposed pad (TQFP variants) should be soldered to a copper pour connected to digital ground for thermal dissipation.
Route the USB DP and DM traces as a 90 ohm differential pair with length matching within 150 mil and continuous reference plane on layer 2. Per Microchip's USB design checklist, avoid routing DP/DM near high-speed switching signals or noisy power rails. Add a common-mode choke if the design must pass industrial EMC immunity (IEC 61000-4-2/4-4). Series ferrite beads on VBUS are recommended for hot-plug protection.
The PIC32MX420F032H-40V/PT has separate AVDD/AVSS pins for the ADC and VDD/VSS for digital logic. Power AVDD from a filtered 3.3 V rail (10 ohm + 100 nF + 10 uF pi filter) for noise-sensitive ADC conversions. Estimated: at 40 MHz with full peripheral activity the core draws approximately 50 mA from VDD; USB suspended state drops to under 1 mA for low-power hosts. Use a low-dropout regulator with adequate headroom and PSRR (e.g., 50 dB at 100 kHz) for clean analog results.
Do not skip configuring the USB peripheral's VBUS sense pin in software, especially for OTG host mode; failing to assert VBUS enable within 100 ms of attach will fail USB compliance. Ensure the JTAG/PGD1-PGC1 pins are not inadvertently repurposed as GPIO during in-circuit programming. When migrating firmware from PIC32MX320 to PIC32MX420, review the USB register map for OTG-specific bits that are not present on device-only variants.
Informações de conformidade
Lead-free finish standard for PT suffix; RoHS compliance per Microchip product page. AEC-Q100 automotive qualification is not available on the PIC32MX420 family - choose AEC-Q100 qualified parts (e.g., dsPIC33) for automotive applications.
